JP4098800B2 - Cane - Google Patents

Description

  The present invention relates to a cane that is used for assisting or training walking in hospitals and homes by people who have injured feet or who have weakened feet.

The conventional cane assists the walking movement by stabilizing the weight support of the user, but does not assist the movement of the cane itself. Patent Document 2 discloses a wheeled cane that brakes depending on the situation and operation at hand, but this also facilitates the movement of the cane, but does not have a function to advance the cane itself. .
Registered Utility Model No. 3116855 JP 2005-137410 A

  The present invention is a cane with wheels that can be moved easily, but when a load exceeding a predetermined value is applied, the grounding leg that brakes the movement protrudes to stably stop the cane, and then wakes up the body to advance. The object is to provide a cane that assists walking while the cane itself is self-propelled for a certain distance, excluding the load applied.

In order to solve the above-described problems, the first invention is that the tip and handle are connected to each other through an elastic body so as to be movable up and down, and a single-point or multi-point grounding leg is lowered when a load exceeding a predetermined value is applied. A walking stick having a double structure with a stone protrusion so as to move and contact the road surface. The walking stick body 1 has a handle tube 3 having a grip portion 2 and an upper end portion inserted into and locked to the handle tube 3. A grounding leg 4 having a portion directed toward the road surface, a sheath pipe 6 slidably inserted through an intermediate portion of the grounding leg 4 into an inner peripheral surface, a wheel frame 5 to which the sheath pipe 6 is fixed and provided with a wheel 7; An elastic body 8 wound between the upper end of the sheath tube 6 and the lower end of the handle tube 3 which is wound around the leg 4 and fixed to the wheel frame 5; a shaft gear 11 provided on the support shaft of the wheel 7 ; above only as engaged with the shaft gear 11 when the upward movement of該接Chiashi 4 provided resiliently was flared to the ground-side end outer peripheral surface of the ground leg 4 Consists rack 12 which comprises a gear tooth formed on come, the ground leg 4 or more load given the stake is moved downward against the urging force of the elastic body 8, the associated integrally with the downward When the rack 12 is grounded to the road surface without rotating the wheel 7 by getting over the shaft gear 11 without being engaged with the shaft gear 11 , when the load is released, the urging force of the elastic body 8 moves up the grounding leg 4. In this case, the rack 12 and the shaft gear 11 that are integrated with the upper movement are elastically meshed with each other so that the wheel 7 is rotated forward so that it can self-propelled for a certain distance.

  In the second invention, the elastic engagement between the rack 12 and the shaft gear 11 urges the rack 12 by a leaf spring 13 from a longitudinal notch groove on the outer peripheral surface of the grounding side end of the grounding leg 4. And it is a cane according to the first aspect of the invention, which is performed by facing the shaft gear 11.

Moreover, 3rd invention is a cane as described in 1st invention or 2nd invention which provided the auxiliary vehicle 15 and the auxiliary wheel 7-1 in the said wheel frame 5. FIG.
Further, the fourth aspect of the present invention is that the handle tube 3 and the handle tube 3 and the handle tube 3 are opened and closed radially from the axial center of the handle tube 3 using the relative vertical movement of the handle tube 3 and the grounding leg 4 and the wheel frame 5. The walking stick according to any one of the first to third aspects, further comprising an opening / closing ground leg 16 provided when the ground leg 4 is grounded and moved up when the ground leg 4 moves down.

From the above configuration, according to the first invention, when the user deposits his / her weight on the cane, the leg part touches the road surface against the restoring force of the elastic body and stops the wheel movement, so the user supports the cane. If you return your weight to the cane with your posture while holding the grip, you can lift the grip by the restoring force of the elastic body. The integral leg portion is separated from the road surface, and at that time, the restoring force of the elastic body is transmitted to the wheels of the wheel frame to advance the cane by a predetermined distance. Therefore, it is not necessary for the handicapped user to move forward. Also, if you stumble during self-running and suddenly get on your weight, the wheel will stop moving, so it is safe.

Further, according to the first and second inventions , when the cane is advanced by itself, the shaft gear of the wheel flips the teeth of the elastically actuated rack provided on the grounding leg, and the inertia caused by the resistance is poor. When running, it is difficult to run away, and when the cane is going to fall back and the cane moves backward, the wheel shaft gear meshes with the rack of the grounding leg, and the elastic body gradually compresses and resists its restoring force to ground Gradual braking is applied to bring the leg into contact with the road surface, so that even if the weight is not applied to the cane positioned in front and the grounding leg cannot be protruded, the gripping part moves down for a certain distance and stops safely.
Further, the third invention increases the stability when the cane is traveling, and the fourth invention increases the stability when the cane is supported without being disturbed during movement.

One embodiment of the present invention is shown in FIGS.
The cane body 1 has a wheel frame 5 having a sheath tube 6 and a wheel 7 corresponding to the distal end thereof and an upper end thereof inserted integrally with the handle tube 3, and a grounded leg 4 that is stopped is connected through an elastic body 8 so as to be movable up and down. When the load more than a predetermined value is applied, the grounding leg 4 has a double structure so that the grounding leg 4 moves down and comes in contact with the road surface. 4 has a structure that self-propels for a certain distance while moving up.

  The wheel frame 5 includes a twin wheel 7, a single auxiliary wheel 15, and a sheath tube 6, and the ground leg 4 is slidably inserted into the sheath tube 6. The grounding leg 4 is inserted into the lower part of the handle pipe 3 with a lock pin 9 and is secured, and a non-slip rubber or resin cap 10 is fitted to the lower end part so that the inside of the sheath pipe 6 is integrated with the handle pipe 3. And slide. In addition, a coil spring wound around the grounding leg 4 is sandwiched between the flange portion at the lower end of the handle tube 3 integrated with the grounding leg 4 by the lock pin 9 and the flange portion at the upper end of the sheath tube 6. 3 acts as an elastic body 8 that holds 3.

  Accordingly, when a predetermined load or more is not applied to the handle tube 3, the grounding leg 4 is lifted by the wheel frame 5 and floated from the ground as shown in FIG. 2, the grounding leg 4 is moved down against the urging force of the coil spring, which is the elastic body 8, and is grounded, as shown in FIG.

  As shown in FIGS. 2 and 3, the ground leg 4 is located between the two wheels which are the wheels 7 of the wheel frame 5, and is provided on the shaft gear 11 and the ground leg 4 provided on the axle between the two wheels. The rack 12 is in a meshing structure. The rack 12 is urged by a leaf spring 13 from a vertically long notch groove of the grounding leg 4 so as to face the shaft gear 11, and the teeth of the rack 12 are shafts when the grounding leg 4 moves downward. It is provided upward so as to engage with the gear 11 without engaging with it and engage only when it moves upward, and the urging force of the leaf spring 13 is also set so as to act as such.

In addition, the grounding leg 4 is provided with a stopper 14 that serves to adjust the self-running distance of the cane 1 and prevent the grounding leg 4 from coming off the wheel frame 5 above the rack 12. The stopper 14 by such abutting more in sheath pipe 6 lower when the ground leg 4 is moved upward not float ground legs 4, with rack 12 to prevent removal from engagement with the shaft gear 11 It operates to stop the rotation of the wheel 7 and is used to adjust the reach distance of the self-propelled advance according to the leg strength of the user. When the handle pipe 3 is unexpectedly lifted, the rack 12 is This is to prevent the grounding leg 4 from sinking and coming out of the wheel frame 5.

  If the user just holds the grip 2 of the cane 1, the grounding leg 4 remains floating from the road surface, so that the cane 1 can be easily advanced by the wheel 7 and the auxiliary vehicle 15. However, when the vehicle moves forward as it is, the shaft gear 11 of the wheel 7 repels the teeth of the rack 12, and therefore the traveling is poor in inertia with the corresponding resistance. On the other hand, when moving backward, the shaft gear 11 of the wheel 7 engages with the rack 12 and operates to lower the grounding leg 4, and the restoring force generated in the coil spring which is the elastic body 8 compressed at that time becomes the braking force, The wheel 7 stops when the grounding leg 4 comes into contact with the road surface while gradually increasing as it moves backward.

  In addition, when the user wants to stop his / her foot and support his / her body, the user simply deposits his / her weight on the cane 1 via the grip 2. At that time, the grounding leg 4 is moved down integrally with the grip portion 2 and the handle tube 3 while the teeth of the rack 12 are bounced by the shaft gear 11 of the wheel 7 against the biasing force of the coil spring which is the elastic body 8. Ground. Since this state is a stable state in which the wheel 7 and the ground leg 4 are in contact with the road surface and do not move, if this state is created on the front side of the body, the user can rest his / her weight on the cane 1 with confidence. Can be carried forward.

  Next, when the weight held in the cane 1 is returned to the user while holding the grasping portion 2 so as not to break the balance of the body while carrying his / her foot forward, the grounding leg 4 becomes an elastic body. The cane 1 leaves the road surface due to the restoring force of the coil spring 8 and the cane 1 tries to return to a state where the original load can be reduced. At this time, the rack 12 provided on the grounding leg 4 meshes with the shaft gear 11 provided on the wheel 7, the wheel 7 is rotated as the grounding leg 4 rises, and the stopper 14 provided above the rack 12 is connected to the sheath tube 6. The cane 1 is advanced until it hits the lower end of the. Here, if you keep your weight on the cane 1 that has moved forward and repeat the same thing, you can rely on the cane 1 to go to the feet, stop the foot on the cane 1 and return your posture. You can go forward.

"Effect of the embodiment"
In the case of this embodiment, since the auxiliary vehicle 15 is attached, the sense of stability before and after is increased, and the cane 1 can be made independent when not in use.

  In addition, by adjusting the position of the stopper 14 of the grounding leg, the cane 1 moves forward every one segment according to the stride according to the user's walking ability, so the user who cannot take a large stride You can get a self-propelled walking stick that can be used with peace of mind.

"Other embodiments"
According to this embodiment, there is only one point of ground contact of the ground leg 4, but in other embodiments, a plurality of points may be grounded in order to increase stability as shown in FIG. In this case, as shown in FIGS. 5 and 6, an open / close grounding leg 16 that opens and closes radially from the center of the shaft as the handle 3 moves up and down functions so as not to interfere with the movement of the cane 1. Multiple points may be grounded by the method.

  According to said embodiment, although the wheel part with a self-propelled mechanism was one place, in other embodiment, as shown to FIG. 7, FIG. It may be grounded at multiple points.

The leg is in the state which floated with the front view which fractured | ruptured one part which shows one Embodiment of this invention. The leg is in the grounding state in the front view which partially fractured showing one embodiment of the present invention. It is the right view which fractured | ruptured a part of FIG. It is a front view which shows embodiment in the case of supporting at multiple points. It is a dynamic diagram which shows embodiment in case an opening-and-closing grounding leg supports at multiple points. FIG. 6 is a dynamic diagram showing an embodiment in which an open / close grounding leg different from FIG. 5 is supported at multiple points. It is a front view which shows embodiment in case there are two wheel parts with a self-propelled mechanism. FIG. 8 is a top view of FIG. 7.

Explanation of symbols

1 Cane body
2 gripping part
3 handle tube
4 Grounding legs
5 Wheel frame
6 sheath tube
7 Wheel 7-1 Auxiliary wheel
8 Elastic body
9 Lock pin
10 cap
11 shaft gear
12 racks
13 leaf spring
14 Stopper
15 Auxiliary vehicle
16 Opening and closing grounding legs

Claims (4)

The tip and handle are connected via an elastic body so that they can move up and down, and when a load exceeding the specified level is applied, the single or multi-point grounding leg moves down and touches the road surface double. The cane body (1) includes a handle pipe (3) having a gripping part (2), and a grounding head having an upper end inserted through and locked to the handle pipe (3) and a lower end part toward the road surface. A leg frame (4), a sheath pipe (6) slidably inserted through the inner peripheral surface of an intermediate portion of the grounding leg (4), and a wheel frame (6) to which the sheath pipe (6) is fixed and a wheel (7) is provided. 5) and an elastic body (8) sandwiched between the upper end of the sheath pipe (6) and the lower end of the handle pipe (3) which is wound around the ground leg (4) and fixed to the wheel frame (5) A shaft gear (11) provided on the support shaft of the wheel (7), and a grounding leg (4) provided by elastically projecting from the outer peripheral surface of the grounding side end of the grounding leg (4). Place of uplift The biasing force of only a rack with the shaft gear (11) and upwardly formed gear teeth as meshes made from (12), said load or greater predetermined is stake ground leg (4) of the elastic body (8) The rack (12) accompanying the downward movement is moved against the shaft gear (11) without being engaged with the shaft gear (11), so that the wheel (7) is grounded without rotating the wheel (7). When the load is released, the urging force of the elastic body (8) moves the grounding leg (4) upward, while the rack (12) and the shaft gear (11) integrally move with the upward movement. A cane that rotates the wheel (7) forward by elastically meshing with each other so as to be self-propelled for a certain distance.   The elastic engagement between the rack (12) and the shaft gear (11) causes the rack (12) to come out of a longitudinal notch groove on the outer peripheral surface of the grounding side end of the grounding leg (4). The cane according to claim 1, wherein the cane is urged with a shaft to face the shaft gear (11).   The cane according to claim 1 or 2, wherein an auxiliary vehicle (15) and an auxiliary wheel (7-1) are provided on the wheel frame (5).   The handle tube (3) and the grounding leg (4) are linked to the handle frame (5) by a link mechanism that opens and closes radially from the axial center of the handle tube (3) using the relative vertical movement of the wheel frame (5). The cane according to any one of claims 1 to 3, further comprising: 3) and an open / close grounding leg (16) that is grounded when the grounding leg (4) is lowered and moved up.

Images